After Williams accounted for 2.5 sacks from the position when he switched from the three-technique in Thursday night's win over the Washington Redskins, Frazier said he would talk about a less-than-temporary change.

Less than a week later, Frazier seemed a little more guarded with the idea.

"We're probably going to get him a few snaps there," Frazier said. "Some of it depends on Letroy [Guion's] healthy, along with Fred [Evans] and we're not sure where Fred is at this point. Letroy seems to be getting better, he'll practice [Wednesday]. So we'll have a better idea."

Guion (shoulder) and Evans (knee) sat out of Thursday's game, thinning the Vikings' defensive line to six healthy players. Defensive coordinator Alan Williams had to use all six linemen on two occasions against the Redskins in goal line situations.

Fighting through double teams and the occasional single block, Williams was able to nab a shifty Robert Griffin III twice on his own, once assisted as he accounted for as many sacks as he's had in the past 23 games combined.

A long-term switch would put more on rookie defensive tackle Sharrif Floyd's plate as he would be thrusted into the lead role at the three-technique spot.

Floyd played a career high 47 snaps on Thursday and said he'd be content with any situation the coaches put him in.

"I played 80 snaps in college, I'll be fine," Floyd said.

However, it appears nothing more than a fill-in role is in Williams' future as far as nose tackle.

Frazier said Guion will return to practice Wednesday. Evans is still out.

"[Williams] did such a good job in that ballgame against Washington, we got to consider it," Frazier said. "It may happen sometimes in that game on Sunday."

Guion, the Vikings' starter at nose, played undertackle before the 2012 season, but made the switch shortly after he signed a three-year extension. He's underwhelmed since the switch, accounting for just three sacks in 24 games since.

Guion, 26, has been in on 15 tackles and has one of his two career forced fumbles this season as he leads the rotation in front of Evans.

Any extended time at nose would also put added pressure on Williams, an 11-year veteran who already suffered a hyperextended knee this preseason from a low block.

"The blocking schemes are a lot different there, a lot more people trying to cut at your legs. Those things factor in," Frazier said. "And you're a little bit closer to the ball, and he's always been a dominant 3-technique in our league. So, it requires, I don't want to say skill set, but a little different mindset playing at the nose position."